Originally Posted by
Bradley Hardacre
Yes it does and you are correct, but we're not talking about the LOC, ICAO Annex 10 gives you a range of 10nm for a standard GS unless a different range is published in the individual airfield AIP and since the subject of the discussion is the vertical bit, it is worth noting that it is different to the LOC which covers the horizontal bit.
I would add that the minimum altitudes for the approach are published precisely because the GS cannot be relied upon outside it's DOC.
You are correct. Beyond the distance given glide slope doesn't ensure terrain clearance.